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7e48f706df
* Update pyproject.toml * add pre-commit * Create .pre-commit-config.yaml * Comment out ruff * Update .pre-commit-config.yaml * General formatting * Create format-and-fail.yml * Update ci.yml * Add pre-commit to dev dependencies * Update pyproject.toml
11 lines
428 B
Python
11 lines
428 B
Python
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def fnv1a_hash_mod(s: str, modulo:int) -> int:
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# receives a string and returns a number in [0:modulo-1], ensures an even distribution over the modulo range
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hash = 0x811c9dc5 # FNV offset basis
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fnv_prime = 0x01000193 # FNV prime
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for char in s:
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hash ^= ord(char)
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hash *= fnv_prime
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hash &= 0xFFFFFFFF # Keep it 32-bit
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return (hash if hash < 0x80000000 else hash - 0x100000000) % modulo
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